| A behavior is an unchanging form of events due to the activity within an assembly. (ATC 18) |
| A homeostat is a cybernetic model of all brains. (ATC 17) |
| Variety is a measure of uncertainty. Uncertainty = -Information. Variety = log2n. (ATC 26) |
| The variety of actions must be at least as great as the variety of fluctuations to be corrected. (ATC 51) |
| Feedback is the return of a signal, indicating the result of an action, in order to determine further actions. (ATC 114) |
| Learning implies teaching and teaching implies learning. (CCL 33) |
| Cognitive processes are not confined to the human brain. (CCL 1) |